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[PWGLF] separating lambda and anti-lambda #10624

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Merged
dmallick2 merged 1 commit into from
Mar 25, 2025
Merged

[PWGLF] separating lambda and anti-lambda #10624

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34 changes: 30 additions & 4 deletions PWGLF/Tasks/Resonances/heptaquark.cxx
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Original file line number Diff line number Diff line change
Expand Up @@ -20,7 +20,7 @@
#include <TMath.h>
#include <TRandom3.h>
#include <fairlogger/Logger.h>
#include <iostream>

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[include-iostream] 

Do not include iostream. Use O2 logging instead.
#include <iterator>
#include <string>
#include <vector>
Expand Down Expand Up @@ -80,8 +80,8 @@
histos.add("h_InvMass_rotLambda", "h_InvMass_rotLambda", {HistType::kTH3F, {massAxis, ptAxis, centAxis}});
histos.add("h_InvMass_rotPhiLambda", "h_InvMass_rotPhiLambda", {HistType::kTH3F, {massAxis, ptAxis, centAxis}});

histos.add("hDalitz", "hDalitz", {HistType::kTHnSparseF, {massPPAxis, massPLAxis, massAxis, ptAxis, centAxis}});
histos.add("hDalitzRot", "hDalitzRot", {HistType::kTHnSparseF, {massPPAxis, massPLAxis, massAxis, ptAxis, centAxis}});
histos.add("hDalitz", "hDalitz", {HistType::kTHnSparseF, {massPPAxis, massPLAxis, massAxis, ptAxis, {2, -0.5f, 1.5f}, centAxis}});
histos.add("hDalitzRot", "hDalitzRot", {HistType::kTHnSparseF, {massPPAxis, massPLAxis, massAxis, ptAxis, {2, -0.5f, 1.5f}, centAxis}});
}

double massLambda = o2::constants::physics::MassLambda;
Expand All @@ -95,42 +95,42 @@
{
if (PIDStrategy == 0) {
if (TOFHit != 1) {
if (TMath::Abs(nsigmaTPC) < cutNsigmaTPC) {

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[root-entity] 

Replace ROOT entities with equivalents from standard C++ or from O2.
return true;
}
}
if (TOFHit == 1) {
if (TMath::Abs(nsigmaTOF) < cutNsigmaTOF) {

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[root-entity] 

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return true;
}
}
}
if (PIDStrategy == 1) {
if (ptcand < 0.5) {
if (TOFHit != 1 && TMath::Abs(nsigmaTPC) < cutNsigmaTPC) {

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[root-entity] 

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return true;
}
if (TOFHit == 1 && TMath::Abs(nsigmaTOF) < cutNsigmaTOF) {

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[root-entity] 

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return true;
}
}
if (ptcand >= 0.5) {
if (TOFHit == 1 && TMath::Abs(nsigmaTOF) < cutNsigmaTOF) {

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[root-entity] 

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return true;
}
}
}
if (PIDStrategy == 2) {
if (ptcand < 0.5) {
if (TOFHit != 1 && TMath::Abs(nsigmaTPC) < cutNsigmaTPC) {

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[root-entity] 

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return true;
}
if (TOFHit == 1 && TMath::Abs(nsigmaTOF) < cutNsigmaTOF) {

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[root-entity] 

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return true;
}
}
if (ptcand >= 0.5 && ptcand < 1.2) {
if (TOFHit == 1 && TMath::Abs(nsigmaTOF) < cutNsigmaTOF) {

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[root-entity] 

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return true;
}
if (TOFHit != 1 && nsigmaTPC > -1.5 && nsigmaTPC < cutNsigmaTPC) {
Expand All @@ -138,7 +138,7 @@
}
}
if (ptcand >= 1.2) {
if (TOFHit == 1 && TMath::Abs(nsigmaTOF) < cutNsigmaTOF) {

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[root-entity] 

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return true;
}
if (TOFHit != 1 && TMath::Abs(nsigmaTPC) < cutNsigmaTPC) {
Expand Down Expand Up @@ -172,6 +172,30 @@
return false;
}

template <typename V01, typename V02>
ROOT::Math::XYZVector getDCAofV0V0(V01 const& v01, V02 const& v02)
{
ROOT::Math::XYZVector v01pos, v02pos, v01mom, v02mom;
v01pos.SetXYZ(v01.x(), v01.y(), v01.z());
v02pos.SetXYZ(v02.x(), v02.y(), v02.z());
v01mom.SetXYZ(v01.px(), v01.py(), v01.pz());
v02mom.SetXYZ(v02.px(), v02.py(), v02.pz());

ROOT::Math::XYZVector posdiff = v02pos - v01pos;
ROOT::Math::XYZVector cross = v01mom.Cross(v02mom);
ROOT::Math::XYZVector dcaVec = (posdiff.Dot(cross) / cross.Mag2()) * cross;
return dcaVec;
}

template <typename V01, typename V02>
float getCPA(V01 const& v01, V02 const& v02)
{
ROOT::Math::XYZVector v01mom, v02mom;
v01mom.SetXYZ(v01.px() / v01.p(), v01.py() / v01.p(), v01.pz() / v01.p());
v02mom.SetXYZ(v02.px() / v02.p(), v02.py() / v02.p(), v02.pz() / v02.p());
return v01mom.Dot(v02mom);
}

ROOT::Math::PxPyPzMVector DauVec1, DauVec2;

TLorentzVector exotic, HQ1, HQ2, HQ3;
Expand Down Expand Up @@ -257,6 +281,8 @@
if (hqtrackd3.hqMass() < minLambdaMass || hqtrackd3.hqMass() > maxLambdaMass)
continue;

int isLambda = static_cast<int>(hqtrackd3.hqId() < 0);

if (hqtrackd3.hqId() > 0) {
DauVec1 = ROOT::Math::PxPyPzMVector(hqtrackd3.hqd1Px(), hqtrackd3.hqd1Py(), hqtrackd3.hqd1Pz(), massPr);
DauVec2 = ROOT::Math::PxPyPzMVector(hqtrackd3.hqd2Px(), hqtrackd3.hqd2Py(), hqtrackd3.hqd2Pz(), massPi);
Expand Down Expand Up @@ -296,7 +322,7 @@
HQ13 = HQ1 + HQ3;

histos.fill(HIST("h_InvMass_same"), exotic.M(), exotic.Pt(), collision.centrality());
histos.fill(HIST("hDalitz"), HQ12.M2(), HQ13.M2(), exotic.M(), exotic.Pt(), collision.centrality());
histos.fill(HIST("hDalitz"), HQ12.M2(), HQ13.M2(), exotic.M(), exotic.Pt(), isLambda, collision.centrality());

if (cfgRotBkg) {
for (int nr = 0; nr < cfgNRotBkg; nr++) {
Expand All @@ -319,7 +345,7 @@
histos.fill(HIST("h_InvMass_rotPhi"), exoticRot2.M(), exoticRot2.Pt(), collision.centrality());
histos.fill(HIST("h_InvMass_rotLambda"), exoticRot3.M(), exoticRot3.Pt(), collision.centrality());
histos.fill(HIST("h_InvMass_rotPhiLambda"), exoticRot23.M(), exoticRot23.Pt(), collision.centrality());
histos.fill(HIST("hDalitzRot"), HQ12Rot.M2(), HQ13Rot.M2(), exoticRot23.M(), exoticRot23.Pt(), collision.centrality());
histos.fill(HIST("hDalitzRot"), HQ12Rot.M2(), HQ13Rot.M2(), exoticRot23.M(), exoticRot23.Pt(), isLambda, collision.centrality());
}
}
}
Expand Down
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